The Model 740 Thermocouple Selector Switch acts in conjunction with the
Zeref Ice Point Reference Unit to give a complete thermocouple
referencing system.
Up to 18 thermocouples can be accommodated on the top of the Selector,
by screw terminals, standard or miniature thermocouple sockets, or a
combination of all three. The sockets or screw terminals are connected
via looms to cold junction probes which fit into a Zeref Type 136.
Any type of thermocouple, or
combination of thermocouples, can be referenced if specified at the time
of ordering.
From the Zeref, the referenced outputs of the thermocouples return to
the Thermocouple Selector and are presented via the highest quality
thermocouple switch available to two output terminals which can then be
connected to a microvolt measuring device.
